Cieszyn is one of the oldest cities of Śląsk. According to a legend it was established by 3 suns of Polish ruler Leszko III in 810 year. But the first signs of colonization originate from VI – V century BC and the “Old Cieszyn” – the Slavic city existed until VIII century, when it was destroyed. The history of Cieszyn is connected with Castle Hill, around which the new city was located. In 1290 year Cieszyn became a capital city of the Cieszyńskie Principality and later region of Śląsk Cieszyński. Since the Reformation Cieszyn was the city diverse in religious respect. The largest evangelical church in Poland originate from the period when Counterreformation was ended. The city was inhabited by Poles, Germans, Czechs, Jews and Hungarians. In 1789 the city was totally destroyed due to fire. Majority of newly built houses survived up to date. The old Piast’s castle was destroyed by new authorities in XIX century and New Castle was built on the Castle Hill (only the Piastowska Tower from XIV century and Rotunda of St. Nicolas from XI century survived). The city was divided after The World War I, when the Poland regained the independence. The border was drawn along The Olza River. Nowadays on the right-bank side lays Cieszyn and on the left bank - Český Těšín.